Table of contents
Installation manual
2
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
Table of contents
1 About this document 3
2 Specific installer safety instructions 4
3 About the kit 7
3.1 Components....................................................................................... 7
3.2 Basic parameters ............................................................................... 8
3.3 Compatibility ...................................................................................... 8
4 About the box 9
4.1 To unpack the adapter ....................................................................... 9
5 Installation 10
5.1 Precautions when installing the kit..................................................... 10
5.2 Preparing the installation site............................................................. 10
5.3 To install the Modbus adapter............................................................ 11
5.3.1 To install the Modbus adapter with the KRP1BC101
installation box ........................................................................ 11
5.3.2 To install the Modbus adapter PCB with field supplied casing 13
5.4 Connecting the electrical wiring ......................................................... 13
5.4.1 Overview of electrical connections.......................................... 14
5.4.2 To connect the power supply.................................................. 15
5.4.3 To connect the P1P2 wiring.................................................... 16
5.4.4 To connect the RS485 wiring.................................................. 17
6 Configuration 18
6.1 Status LEDs ....................................................................................... 18
6.2 P1P2 communication ......................................................................... 20
6.3 Modbus protocol ................................................................................ 20
6.3.1 Modbus address range ........................................................... 20
6.3.2 Modbus registers .................................................................... 21
6.3.3 Modbus master timeout .......................................................... 22
6.3.4 Terminating resistor settings................................................... 23
6.4 Control functions ................................................................................ 23
6.4.1 Unit control.............................................................................. 23
6.4.2 Control update mode .............................................................. 24
